teetering on thin, twisted legs. Its hairless head was skull-like, with gaping mouth and huge, round eyes.

Maya gasped, profoundly shocked. The little creature looked more like a miniature Martian native than a human, but the Martians themselves were not so distorted. She saw her own shock reflected in Nuwell's face.

"Petway, get us three glasses of wine," commanded Goat calmly.

Petway vanished and Goat turned briskly back to his guests.

"Now," he said, "I shall outline the progress of my experiments to you and answer any questions you may have."

3

Maya's education was extensive, but it did not include the genetic sciences. She was able to follow Goat's explanations and his references to the charts he hung, one after another, on the wall of his study, but she was able to follow them only in a general sense. The technical details escaped her.

Nuwell seemed to have a better grasp of the subject. He nodded his dark, curly head frequently, and occasionally asked a question or two.

"Surgery is performed with a concentrated electron stream on the cells of the early embryo," said Goat. "I call it surgery,[Pg 18] but actually it is an alteration of the structure of certain specific genes which govern the characteristics I am attempting to change. Such changes would, of course, then be transmitted on down to any progeny.

[Pg 18]

"The earlier the embryo is caught, the easier and surer the surgery, because when it has divided into too many cells the very task of dealing with each one separately makes the time requirement prohibitive, besides multiplying the chance for error. The Martians have a method of altering the physical structure and genetic composition of a full-grown adult, but this is far beyond the stage I've reached."

"The Martians?" repeated Nuwell in astonishment. "You mean the Martian natives? They're nothing but degenerated animals!"

"You're wrong," replied Goat. "I know that's the general opinion, but I had considerable contact with them a good many years ago. Perhaps most of them are little more than strange animals. No one really knows. They live simple, animal-like lives, holed up in desert caves, and they're rarely communicative in any way. But I know from my own experience that 

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